Sandwich Panels – Behavior in Fire Based on Fire Resistance Tests

Roszkowski, P.; Sulik, P.

doi:10.14311/asfe.2015.065

Cited by 7 publications

(4 citation statements)

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“…The subject of research presented in the article is mineral wool. Over the years, several authors focused on determining the thermal properties of mineral wool or assemblies containing mineral wool and other materials, such as gypsum boards, thin metal sheets or plasterboards [6][7][8]. The thermal conductivity of mineral wool with a density of 80 kg/m 3 was derived in [9] using a prediction-correction method.…”

Section: Literature Reviewmentioning

confidence: 99%

Determination of Thermal Properties of Mineral Wool Required for the Safety Analysis of Sandwich Panels Subjected to Fire Loads

Ablaoui,

Malendowski,

Szymkuc

et al. 2023

Materials

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The paper presents theoretical, experimental and numerical studies on the thermal behavior of mineral wool used in sandwich panels. The aim of this study is to investigate the thermal properties of mineral wool at elevated temperatures and provide a simple model that would allow us to determine the heat propagation in sandwich panels during a fire. The paper proposes a new method to experimentally evaluate thermal diffusivity, derived from theoretical premises. Experiments are conducted in a laboratory furnace where specimens are placed and temperatures inside specimens are measured. Different methods are used to process the test results and calculate the thermal diffusivity of mineral wool. Finally, a numerical analysis of heat transfer using the finite element method (FEM) is performed to validate the obtained thermal properties.

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Section: Literature Reviewmentioning

confidence: 99%

Determination of Thermal Properties of Mineral Wool Required for the Safety Analysis of Sandwich Panels Subjected to Fire Loads

Ablaoui,

Malendowski,

Szymkuc

et al. 2023

Materials

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“…However, the specific details of each of the tests are different and described in their own specific standards. In the case of sandwich panels, the nonbearing walls made of sandwich panels are carried in accordance with EN 1364‐1, and the procedure was described in details in Roszkowski and Sulik . For glazed curtain walls, the tests are performed following EN 1364‐3, with the procedure and classification requirements presented in previous studies, and some technical challenges related to the choice of the infill solution of the aluminium profiles are presented in Sędłak et al The paper covers some requirements for fire‐rated doors, which are further covered in previous studies .…”

Section: Experimental Set‐upmentioning

confidence: 99%

“…In the case of sandwich panels, the nonbearing walls made of sandwich panels are carried in accordance with EN 1364-1, and the procedure was described in details in Roszkowski and Sulik. 32 For glazed curtain walls, the tests are performed following EN 1364-3, with the procedure and classification requirements presented in previous studies, 33,34 and some technical challenges related to the choice of the infill solution of the aluminium profiles are presented in Sędłak et al 35 The paper 33 covers some requirements for fire-rated doors, which are further covered in previous studies. 36,37 In the case of wooden doors, more information about the testing procedure may be found in Izydorczyk et al 38 The fire resistance tests of penetration seals are described in detail in Sędłak et al 39 4 | RESULTS OF THE ANALYSIS…”

Section: Experimental Set-upmentioning

confidence: 99%

The discrepancies in energy balance in furnace testing, a bug or a feature?

2019

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Summary The paper aims to explain the differences found in the heat release rate measurements in a large sample of standard fire tests (EN 1363‐1). A total of 379 tests of vertical assemblies was investigated, all performed in furnace SPARK of the ITB Fire Testing Laboratory, in 2015‐2018. The assemblies were subdivided into two groups—wall assemblies and fire‐rated doors. These assemblies were also compared with the results of the test of a wall built with aerated autoclaved concrete blocks that was considered as the benchmark test. It was observed that walls built with highly insulated sandwich panels require less heat to maintain standard thermal exposure conditions (20%‐30% less) than their counterparts built from gypsum plasterboard or aluminium and fire‐rated glass. In case of doors, it was observed that combustible samples required significantly less heat than the benchmark case (40%‐70% less), which indicates that the combustion of the sample inside of the furnace was an additional, significant source of heat release, that may skew the qualitative assessment of their performance in fire. A more in‐depth discussion of the results is provided, with some ideas on the direction of further developments in fire testing.

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“…Partitions with appropriate fire resistance class are usually light walls, whose rigidity is ensured by a steel or timber frame and made of plasterboard for example 1,2 ; they may also be masonry walls made of light small-sized bricks [3][4][5] or sandwich panels. [6][7][8] Despite their excellent parameters in curbing fire, however, these materials are increasingly replaced with more aesthetically pleasing translucent walls (filled with glazing [9][10][11][12] or built of glass brick 13 ). Glazed partitions are usually frame structures in which spaces between the metal 14,15 or timber 16 members are filled with opaque or transparent glass.…”

Section: Introductionmentioning

confidence: 99%

Fire resistance of aluminium‐glazed partitions depending on their height

2021

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The actual class of fire resistance of glazed partitions can only be determined according to a test, which meets the normative requirements. The test standards in this field determine the minimum dimensions of the test specimens (2800 × 3000 mm, width × height, in the clear opening of the furnace), on which the test should be carried out. The testing of elements with the minimum dimensions allowed by the test standard, assess the fire resistance of components with slightly larger dimensions. This, however, does not solve the real problem, which is the use of glazed partitions with fire resistance, significantly exceeding the dimensions of the sample walls verified by the tests. The aim of the research described in this article was to verify the influence of the height of glazed partitions on their fire resistance.The results of six tests of partitions with different height (from 3 up to 6 m) and the same width (3 m), made on the basis of the same glazing and the same aluminium profiles have been compared. During the fire resistance tests, the performance criteria of integrity and insulation were verified. Additionally, the deflection of the partition was measured in specific places by means of laser and draw wire sensors.Based on the presented test results, it can be argued that the height of the partition does not have a significant impact on its insulation and integrity, provided that the size of the glass panes is not increased along with the wall height, that the structure of the element is symmetrical in relation to the central vertical axis and, most importantly, that the mullions are properly stiffened.

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Sandwich Panels – Behavior in Fire Based on Fire Resistance Tests

Cited by 7 publications

References 0 publications

Determination of Thermal Properties of Mineral Wool Required for the Safety Analysis of Sandwich Panels Subjected to Fire Loads

Determination of Thermal Properties of Mineral Wool Required for the Safety Analysis of Sandwich Panels Subjected to Fire Loads

The discrepancies in energy balance in furnace testing, a bug or a feature?

Fire resistance of aluminium‐glazed partitions depending on their height

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